rescalc_export.js

function build(chain) {
    let fileData = "";
    fileData += "Version 4\nSHEET 1 880 680\n";

    //add all wires
    fileData += "WIRE 32 -256 32 -272\n" +
            "WIRE 32 -208 32 -256\n" +
            "WIRE 32 -96 32 -128\n" +
            "WIRE -128 -48 -128 -64\n" +
            "WIRE -128 16 -128 -48\n" +
            "WIRE -96 16 -128 16\n" +
            "FLAG 32 -96 0\n" +
            "FLAG 32 -256 U1\n" +
            "FLAG -128 -48 U1\n";

    //wire up resistors
    var pos = 0;
    for (let i = 0; i < chain.res.length; i++) {
        pos = -16 + i * 128;
        fileData += "WIRE " + (pos + 48) + " 16 " + pos + " 16\n";
    }
    //place ground at the end of the resistors
    fileData += "FLAG " + (pos + 48) + " 16 0\n";

    //add voltage source
    fileData += "SYMBOL voltage 32 -224 R0\n" +
            "WINDOW 123 0 0 Left 0\n" +
            "WINDOW 39 0 0 Left 0\n" +
            "SYMATTR InstName V1\n" +
            "SYMATTR Value " + chain.volt + "\n";

    //add all resistors
    for (let i = 0; i < chain.res.length; i++) {
        fileData +="SYMBOL res " + (i * 128)  + " 0 R90\n";  //position
        fileData += "WINDOW 0 0 56 VBottom 2\n";
        fileData += "WINDOW 3 32 56 VTop 2\n";
        fileData += "SYMATTR InstName R" + (i + 1) + "\n"; //name
        fileData += "SYMATTR Value " + chain.res[i] + "R\n"; //resistance value
    }
    return fileData;
}

function download(data, filename) {
    const blob = new Blob([data], {type: 'text/csv'});
    if(window.navigator.msSaveOrOpenBlob) {
        window.navigator.msSaveBlob(blob, filename);
    }
    else{
        const elem = window.document.createElement('a');
        elem.href = window.URL.createObjectURL(blob);
        elem.download = filename;        
        document.body.appendChild(elem);
        elem.click();        
        document.body.removeChild(elem);
    }
}

export {build, download};

export resChains created with this script